A disc mower is a 3pt implement that sticks out the side of your tractor and is used primarily to cut hay. It does not like brush,rocks,stumps etc, but if you have a nice hay field or pasture, it will mow as fast as you can stay on the seat. Low power is required as it only cuts the hay once at the bottom, like a sickle bar, but WITHOUT the aggrivation of constant maintenance. Mows hay wet or dry and does not plug. I have for sale a Kuhn GMD33N which cuts a 4 foot swath and requires only about 16hp, so it is well suited to a small tractor. Go to Kuhn Farm Machinery on the net for more details. I paid about $3500 in 2008 but will sell for $1995. Excellent condition. Located in NH. Will Mack, willjudymack@gmail.com, 978-857-8281